Table 3. Socio-demographic characteristics of participants (Mean ± SD).

Characteristics	Students in School A	Students in School B	F a)	p-value
Age, years	11.33±1.35	10.63±0.98	38.576	<0.001
Height, cm	146.05±10.09	141.57±8.12	25.327	<0.001
Weight, kg	37.95±8.77	34.84±9.07	12.884	<0.001
BMI, kg/m2	17.60±2.61	17.17±3.05	2.397	0.122
School age, years	6.31±0.64	6.35±0.61	0.587	0.444
Years of education, years	8.61±1.51	7.77±1.06	44.399	<0.001
Length of residency, years	10.86±2.29	10.11±2.21	12.099	<0.001

^a)One-way analysis of variance was used for continuous variables; BMI = body mass index.